Mysterious Guy (Infinite Fight)

The Mysterious Guy is an unnamed character and is the main antagonist in the very last part of season 2 of MPST. His reason for hostility was because of Kevin stealing the only foods his family could rely on, although it's not all of them. He observed Kevin for years and tried to create a very strong reasoning to kill him at some point. His over-grieving caused him to steal his mother's stuff Kevin had kept for years and also kidnapped Lucy.